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        <div>
            <div><h3 class="title">
                <a name="asio.reference.ssl__rfc2818_verification"></a><a class="link"
                                                                          href="ssl__rfc2818_verification.html"
                                                                          title="ssl::rfc2818_verification">ssl::rfc2818_verification</a>
            </h3></div>
        </div>
    </div>
    <p>
        <a class="indexterm" name="asio.indexterm.ssl__rfc2818_verification"></a>
    </p>
    <p>
        (Deprecated. Use <a class="link" href="ssl__host_name_verification.html"
                            title="ssl::host_name_verification"><code class="computeroutput"><span class="identifier">ssl</span><span
            class="special">::</span><span class="identifier">host_name_verification</span></code></a>.)
        Verifies a certificate against a hostname according to the rules described
        in RFC 2818.
    </p>
    <pre class="programlisting"><span class="keyword">class</span> <span class="identifier">rfc2818_verification</span>
</pre>
    <h5>
        <a name="asio.reference.ssl__rfc2818_verification.h0"></a>
        <span><a name="asio.reference.ssl__rfc2818_verification.types"></a></span><a class="link"
                                                                                     href="ssl__rfc2818_verification.html#asio.reference.ssl__rfc2818_verification.types">Types</a>
    </h5>
    <div class="informaltable">
        <table class="table">
            <colgroup>
                <col>
                <col>
            </colgroup>
            <thead>
            <tr>
                <th>
                    <p>
                        Name
                    </p>
                </th>
                <th>
                    <p>
                        Description
                    </p>
                </th>
            </tr>
            </thead>
            <tbody>
            <tr>
                <td>
                    <p>
                        <a class="link" href="ssl__rfc2818_verification/result_type.html"
                           title="ssl::rfc2818_verification::result_type"><span
                                class="bold"><strong>result_type</strong></span></a>
                    </p>
                </td>
                <td>
                    <p>
                        The type of the function object's result.
                    </p>
                </td>
            </tr>
            </tbody>
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    <h5>
        <a name="asio.reference.ssl__rfc2818_verification.h1"></a>
        <span><a name="asio.reference.ssl__rfc2818_verification.member_functions"></a></span><a class="link"
                                                                                                href="ssl__rfc2818_verification.html#asio.reference.ssl__rfc2818_verification.member_functions">Member
        Functions</a>
    </h5>
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            <thead>
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                <th>
                    <p>
                        Name
                    </p>
                </th>
                <th>
                    <p>
                        Description
                    </p>
                </th>
            </tr>
            </thead>
            <tbody>
            <tr>
                <td>
                    <p>
                        <a class="link" href="ssl__rfc2818_verification/operator_lp__rp_.html"
                           title="ssl::rfc2818_verification::operator()"><span class="bold"><strong>operator()</strong></span></a>
                    </p>
                </td>
                <td>
                    <p>
                        Perform certificate verification.
                    </p>
                </td>
            </tr>
            <tr>
                <td>
                    <p>
                        <a class="link" href="ssl__rfc2818_verification/rfc2818_verification.html"
                           title="ssl::rfc2818_verification::rfc2818_verification"><span class="bold"><strong>rfc2818_verification</strong></span></a>
                        <span class="silver">[constructor]</span>
                    </p>
                </td>
                <td>
                    <p>
                        Constructor.
                    </p>
                </td>
            </tr>
            </tbody>
        </table>
    </div>
    <h5>
        <a name="asio.reference.ssl__rfc2818_verification.h2"></a>
        <span><a name="asio.reference.ssl__rfc2818_verification.example"></a></span><a class="link"
                                                                                       href="ssl__rfc2818_verification.html#asio.reference.ssl__rfc2818_verification.example">Example</a>
    </h5>
    <p>
        The following example shows how to synchronously open a secure connection
        to a given host name:
    </p>
    <pre class="programlisting"><span class="keyword">using</span> <span class="identifier">asio</span><span
            class="special">::</span><span class="identifier">ip</span><span class="special">::</span><span
            class="identifier">tcp</span><span class="special">;</span>
<span class="keyword">namespace</span> <span class="identifier">ssl</span> <span class="special">=</span> <span
                class="identifier">asio</span><span class="special">::</span><span class="identifier">ssl</span><span
                class="special">;</span>
<span class="keyword">typedef</span> <span class="identifier">ssl</span><span class="special">::</span><span
                class="identifier">stream</span><span class="special">&lt;</span><span
                class="identifier">tcp</span><span class="special">::</span><span class="identifier">socket</span><span
                class="special">&gt;</span> <span class="identifier">ssl_socket</span><span class="special">;</span>

<span class="comment">// Create a context that uses the default paths for finding CA certificates.</span>
<span class="identifier">ssl</span><span class="special">::</span><span class="identifier">context</span> <span
                class="identifier">ctx</span><span class="special">(</span><span class="identifier">ssl</span><span
                class="special">::</span><span class="identifier">context</span><span class="special">::</span><span
                class="identifier">sslv23</span><span class="special">);</span>
<span class="identifier">ctx</span><span class="special">.</span><span
                class="identifier">set_default_verify_paths</span><span class="special">();</span>

<span class="comment">// Open a socket and connect it to the remote host.</span>
<span class="identifier">asio</span><span class="special">::</span><span class="identifier">io_context</span> <span
                class="identifier">io_context</span><span class="special">;</span>
<span class="identifier">ssl_socket</span> <span class="identifier">sock</span><span class="special">(</span><span
                class="identifier">io_context</span><span class="special">,</span> <span
                class="identifier">ctx</span><span class="special">);</span>
<span class="identifier">tcp</span><span class="special">::</span><span class="identifier">resolver</span> <span
                class="identifier">resolver</span><span class="special">(</span><span
                class="identifier">io_context</span><span class="special">);</span>
<span class="identifier">tcp</span><span class="special">::</span><span class="identifier">resolver</span><span
                class="special">::</span><span class="identifier">query</span> <span
                class="identifier">query</span><span class="special">(</span><span
                class="string">"host.name"</span><span class="special">,</span> <span class="string">"https"</span><span
                class="special">);</span>
<span class="identifier">asio</span><span class="special">::</span><span class="identifier">connect</span><span
                class="special">(</span><span class="identifier">sock</span><span class="special">.</span><span
                class="identifier">lowest_layer</span><span class="special">(),</span> <span
                class="identifier">resolver</span><span class="special">.</span><span
                class="identifier">resolve</span><span class="special">(</span><span
                class="identifier">query</span><span class="special">));</span>
<span class="identifier">sock</span><span class="special">.</span><span class="identifier">lowest_layer</span><span
                class="special">().</span><span class="identifier">set_option</span><span class="special">(</span><span
                class="identifier">tcp</span><span class="special">::</span><span
                class="identifier">no_delay</span><span class="special">(</span><span class="keyword">true</span><span
                class="special">));</span>

<span class="comment">// Perform SSL handshake and verify the remote host's certificate.</span>
<span class="identifier">sock</span><span class="special">.</span><span class="identifier">set_verify_mode</span><span
                class="special">(</span><span class="identifier">ssl</span><span class="special">::</span><span
                class="identifier">verify_peer</span><span class="special">);</span>
<span class="identifier">sock</span><span class="special">.</span><span
                class="identifier">set_verify_callback</span><span class="special">(</span><span
                class="identifier">ssl</span><span class="special">::</span><span class="identifier">rfc2818_verification</span><span
                class="special">(</span><span class="string">"host.name"</span><span class="special">));</span>
<span class="identifier">sock</span><span class="special">.</span><span class="identifier">handshake</span><span
                class="special">(</span><span class="identifier">ssl_socket</span><span class="special">::</span><span
                class="identifier">client</span><span class="special">);</span>

<span class="comment">// ... read and write as normal ...</span>
</pre>
    <h5>
        <a name="asio.reference.ssl__rfc2818_verification.h3"></a>
        <span><a name="asio.reference.ssl__rfc2818_verification.requirements"></a></span><a class="link"
                                                                                            href="ssl__rfc2818_verification.html#asio.reference.ssl__rfc2818_verification.requirements">Requirements</a>
    </h5>
    <p>
        <span class="emphasis"><em>Header: </em></span><code class="literal">asio/ssl/rfc2818_verification.hpp</code>
    </p>
    <p>
        <span class="emphasis"><em>Convenience header: </em></span><code class="literal">asio/ssl.hpp</code>
    </p>
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            <div class="copyright-footer">Copyright © 2003-2022 Christopher M. Kohlhoff<p>
                Distributed under the Boost Software License, Version 1.0. (See accompanying
                file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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